Moving a toilet and adding a sink
I am remodeling a bathroom in a 150 year old house so there are several unusual features. I want to move a toilet that is on a 3 inch copper line 6 feet away from the 3 inch copper drain stack. It is currently 2 feet away. The vent at the main stack is 2 inches and it is at a 90 degree angle to the stack. It runs about 5 feet before it turns 90 degrees goes up into the attic and snakes around and then exits through the roof. During this 5 feet of nearly horizontal (slopes ¼ inch per foot) run the vent also catches a 1 ½ inch tub drain. Everything works as it is however I was concerned that moving the toilet 6 feet from the stack might cause a problem. Will it? I also want to add a sink to this horizontal wet stack that would also be six feet away. Can I do it without adding a vent closer to the sink which structurally would be very difficult? Would using a 2 inch waste for the sink be a good idea?
Clarification on moving toilet and adding a sink
Tom thanks for the reply. My plan is to cut the copper put in a fernco fitting and then run PVC. I am a novice and open to other ideas. The horizontal wet vent is at floor level and accepts (in order of furthest distance from the main stack) a 1 ½ inch tub drain, the proposed 2 inch sink drain, and the toilet. As I mentioned the main stack makes a 90 degree turn directly above the toilet connection. I used a 3 inch 90 degree elbow with a 2 inch side inlet for a shower and then sized down the horizontal wet vent to 2 inches before the tub and sink connections. Does everything sound OK? Let me know if you need further clarification. Thanks again.
